Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT GENERIC VB ShellExecute Function Inside of VBSCRIPT tag"; flow:to_client,established; file_data; content:"vbscript"; nocase; content:"shellexecute"; nocase; fast_pattern; content:"<script "; nocase; pcre:"/^[^>]*?(?:language\s*?=\s*?[\x22\x27]vbscript[\x22\x27]|type\s*?=\s*?[\x22\x27]text/vbscript[\x22\x27](?:(?!<\/script>).)+?\WShellExecute)/Rsi"; classtype:attempted-user; sid:2019707; rev:3; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2014_11_14, deployment Perimeter, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_10_08;)